]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
a1596438 US |
2 | /* |
3 | * (C) Copyright 2011 - 2012 Samsung Electronics | |
4 | * EXT4 filesystem implementation in Uboot by | |
5 | * Uma Shankar <uma.shankar@samsung.com> | |
6 | * Manjunatha C Achar <a.manjunatha@samsung.com> | |
7 | * | |
8 | * made from existing ext2/dev.c file of Uboot | |
9 | * (C) Copyright 2004 | |
10 | * esd gmbh <www.esd-electronics.com> | |
11 | * Reinhard Arlt <reinhard.arlt@esd-electronics.com> | |
12 | * | |
13 | * based on code of fs/reiserfs/dev.c by | |
14 | * | |
15 | * (C) Copyright 2003 - 2004 | |
16 | * Sysgo AG, <www.elinos.com>, Pavel Bartusek <pba@sysgo.com> | |
a1596438 US |
17 | */ |
18 | ||
19 | /* | |
20 | * Changelog: | |
21 | * 0.1 - Newly created file for ext4fs support. Taken from | |
22 | * fs/ext2/dev.c file in uboot. | |
23 | */ | |
24 | ||
25 | #include <common.h> | |
2a981dc2 | 26 | #include <blk.h> |
a1596438 | 27 | #include <config.h> |
5994e8b6 | 28 | #include <fs_internal.h> |
81180819 | 29 | #include <ext4fs.h> |
a1596438 | 30 | #include <ext_common.h> |
50ce4c07 | 31 | #include "ext4_common.h" |
a1596438 | 32 | |
04735e9c | 33 | lbaint_t part_offset; |
81180819 | 34 | |
4101f687 | 35 | static struct blk_desc *ext4fs_blk_desc; |
81180819 | 36 | static disk_partition_t *part_info; |
a1596438 | 37 | |
4101f687 | 38 | void ext4fs_set_blk_dev(struct blk_desc *rbdd, disk_partition_t *info) |
a1596438 | 39 | { |
50ce4c07 | 40 | assert(rbdd->blksz == (1 << rbdd->log2blksz)); |
4101f687 | 41 | ext4fs_blk_desc = rbdd; |
c28cbfa1 | 42 | get_fs()->dev_desc = rbdd; |
81180819 RH |
43 | part_info = info; |
44 | part_offset = info->start; | |
f1782883 | 45 | get_fs()->total_sect = ((uint64_t)info->size * info->blksz) >> |
50ce4c07 | 46 | get_fs()->dev_desc->log2blksz; |
a1596438 US |
47 | } |
48 | ||
5994e8b6 MB |
49 | int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, |
50 | char *buffer) | |
a1596438 | 51 | { |
5994e8b6 MB |
52 | return fs_devread(get_fs()->dev_desc, part_info, sector, byte_offset, |
53 | byte_len, buffer); | |
a1596438 | 54 | } |
50ce4c07 EE |
55 | |
56 | int ext4_read_superblock(char *buffer) | |
57 | { | |
58 | struct ext_filesystem *fs = get_fs(); | |
59 | int sect = SUPERBLOCK_START >> fs->dev_desc->log2blksz; | |
60 | int off = SUPERBLOCK_START % fs->dev_desc->blksz; | |
61 | ||
62 | return ext4fs_devread(sect, off, SUPERBLOCK_SIZE, | |
63 | buffer); | |
64 | } |